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C. M. HANNA.

ANTIFREEZING HYDRANT.

APPLICATION FILED SEPT-18.1918.

1 ,w gm Patenfed Nov. 18, 1919.

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means tor preventing treeaing oil the Water ipe. p Another object at theinvention is to provide an air tight compartment for incasing a. waterpipe to prevent freezing thereof.

With the above and other objects in view l have invented the deviceillustrated in the accompanying drawings in which 'llhe figure is anelevational view ot a hy drant including my invention.

lZihe reterence characters indicate like parts throughout the followingspecification and in the several views in the drawings in which 1indicates a vvater main and 2 a branch pipe therefor leadi to the faucet3.. llhe pipe 52 is inclosed in a larger pipe at which extends from thetaucet down through the door 5 to the joint h to the main 1. Air tightclosures '6 and i are provided tor the upper and lower ends oil pipe atwhereby an air tight space 8 around pipe "2 is provided in order toprevent freezing oil water in said p p I 1 din escape valve 9 may beprovidedin the upper end of pipe t tor the escape oi air and vapor tromthe space 8 through applying heat to the lower part ot pipe l alter Ifirst having put a small quantity ot water in the space 8 and thensecurely closing the same tugh means ot the closure members t and t. idheating will vaporize the water to such an extent that all air and a latproportion ot the vapor will torced out through valve 9, th e race inthe space d.

Wit blind by enough to prevent freezing it will not be necessary to havecaslng pipe l extend tor the entire length of the pipe 2 within the roomas the desired results will be had by havnag it terminate just above thedoor line and entend down below the door to a point where freezing isimpossible,

Having now described my invention that 1 which l claim as new and desireto secure by Letters Patent is: I I l. lln a hydrant a pipe and ananti-treezmg casing theretor. said casing consisting of a tube larger indiameter than the pipe, an escape valve in said tube. the spaced apartwalls of the pipe and tube providing a chamber in which a vacuum may becreated, by heating water provided in the tube todrive ed air and vaporthrough said valve :2. in a hydrant a pipe, an anti-treeaing casingtherefor, a chamber provided between said casing and chamber in which avacuum may be created by heating water provided in the casing to driveell air and vapor.

3. lln a hydrant a pipe, anantidreezing casing theretor, a chamberprovided between said casing and chamber in which a vacuum may becreated by heating water provided in the casing to drive 0d air andvapor, a

, valve provided in said casing through which said air and vapor may bedriven.

fl. lln a device of the character described a main line pipe a branchline pipe leading therefrom and an enlarged tube inclosing said branchpipe whereby spaces are provided in the said tube, and a valve in theupper end oil said tubing tor exhausting air and vapor created throughthe heating oil water in the tube.

lln testimonv whereot l at mv si ature 7 i V in the presence ot twowitnesses, v

, been in. manna, V Witnesses: W. a u: an

- lPann 1th Hanna.

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